Loud-speaker



Dec. 3, 1929. H.` PERLA ET A1. 1,737,864

LOUD SPEAKER Filed Jan. 8I 1926 2 Sheets-Shet 1 INVENTOR #www LA ,zw @MM BY 7 l ATTONEYS De- 3 1929. H PERLA Er A1. 1,737,864

LOUD SPEAKER Filed Jan- 8. 192e 2 sheets-Sheet 2 INVENTORS ATTORNEYS Patented Dec. 3, 1929 UNITED STATES 'PATENT OFFICE- LOUD-SPEAKER Application led January 8, 1926. Serial No. 79,915.

This invention relates to certain improvements in loud speakers for radio apparatus, and more particularly to a construction and arrangement of the base of a pedestal lamp whereby the loud speaker unit may be incorporated for effective operation, but in an inconspicuous position.

Although our improved base is primarily intended for pedestal lamps, it may serve as the base for any other form of pedestal, such for instance as a costumer. The pedestal that extends upwardly from the base may be of any desired character, either hollow or solid. The base is so designed that the sound waves from the loud speaker unit may freely escape,

and may at the same time be amplified.

In the accompanying drawings, to which reference is to be had:

Fig. 1 is a central longitudinal section through one form of our improved device, and

Fig. 2 is a similar section through another form.

In the construction shown in Fig. 1, the base includes an annular member 10 which may be a casting or a metal stamping, or in some constructions may be formed of wood. This has an outer peripheral wall 11 which is downwardly and outwardly inclined, and a concave top wall 12 which may serve as a sounding board for the loud speaker unit. Within the peripheral wall 11, and below the top wall 12, is a chamber within which the loud speaker unit 13 may be mounted with its horn 14 projecting upwardly through and above the top wall or sounding board 12. The bottom of the chamber may be provided with a closure plate 15, which serves to hold the loud speaker unit in position.

The member 11 serves to support a second member 16 which may be in the form of an inverted cone with its lower open end provided with a flange 17 secured to the member 1() adjacent to the periphery of the wall 12, that is, at the angle of intersection of the r walls 11 and 12. This flange or base part ot' the cone 16 may be of skeleton form or provided with apertures for the escape of the sound waves. The horn 14 of the loud speaker is of smaller diameter than the intermediate portion of the member 16, and preferably within the member 1G there is a concave downwardly facing deiiector or sounding board 18. Thus the sound waves which escape from the upper open end of the horn 14 are deflected downwardly by the sounding board 18 to the lower portion of the cone 16, where they are again deflected upwardly and outwardly by the sounding board 12.

The upper smaller end of the member 16 may have the pedestal 19 secured thereto in i any suitable manner. It the base and pedestal are those of a lamp, the wires 2O may extend through apertures in the walls 11, 12 and 18, to the lower end of the pedestal. The wires 21 for the loud speaker unit may also extend through the wall 11, although pref erably they terminate in a jack 22 so that these wires may be readily disconnected at any time desired. The details of the jack illustrated form no portion of our invention.

In the construction shown in Fig. 2, the loud speaker unit is so mounted in the base of the pedestal that the horn extends downwardly and the support part of the base is kmade of skeleton form. The pedestal 19 is connected to the upper reduced end of a downwardly flaring conical member 1G, and the loud speaker' unit 13u is mounted in the lower end of this member. The horn 14 extends downwardly from the unit and is enclosed in a casing 23. The members 1G and 23 are connected together with the loud speaker unit 18 therebetween, and are supported by downwardly and outwardly flaring members 24 which are preferably in the 'orm of curved metal legs. The upper ends ot these legs may curve outwardly and downwardly for ornamental purposes, if desired. The legs 24 serve to support a sounding board 18 which is opposed to and spaced from the lower open end of the horn 14, so that the sound waves are defiected outwardly and upwardly through the open space between the legs 24. The wire 20 for the electric light, if the pedestal be that of a lamp, may extend through one of the legs 24, and alongside the loud speaker unit 13 to the pedestal 19. The wires 21 and the jack 22 therefor may lead through the member 16a.

It will be noted that in both forms the pedestal terminates in a downwardly and outwardly flaring conical member, and the loud speaker and its horn are entirely concealedwithin the base, while the sound waves are (geflected upwardly and outwardly from the ase.

The two forms above described are only examples, although preferred forms of our invention, and various changes in the details of construction and the arrangement of the parts may be made without departing from the spirit of our invention.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent is 1. In combination a loud speaker unit having a horn, the axis of which extends in a vertical direction, a sound deflector opposite to and spaced from the end of said horn, a pedestal above said unit and said horn and means supporting said pedestal and enclosing said loud speaker unit.

2. In combination a pedestal, a base therefor, a loud speaker unit provided with a horn separate from said base and pedestal and concealed within the base, and an upwardly facing sounding board in said base for deflecting upwardly and outwardly sound waves from said horn.

3. In combination, a pedestal and supporting base, including a casing` part and a plurality of downwardly and outwardly flaring spaced supporting legs, a loud speaker unit disposed within said casing and having a horn part directed downwardly and an upwardly facing sounding board spaced from the lower end of said horn and supported by -said legs and independent of said casing.

4. In combination, a pedestal, a support therefor, a loud speaker unit within said support, a horn connected to said unit with its axis extending in a vertical direction, said horn being disposed below, but in alignment with said pedestal, and a sound def'lector within said support and opposite to the end of said horn.

5. In combination a vertical cylindrical pedestal adapted to serve as a support for a lamp, a loud speaker unit beneath said pedestal and in axial alignment therewith and directed downwardly,`a sound deflector beneath said loud speaker unit and facing upwardly, and means for supporting said pedestal unit and deflector and holding them in spaced relationship. 

